Smith Carrel's Conference Carrel is perfect for classrooms, libraries or tutoring labs where one-on-one interaction is required. This adder unit features only one side panel, so it's easy to attach to a starter unit. This carrel is constructed with a 14-gauge steel frame. A full-perimeter rail system with two braces ensures side panels are secure. The extra-long side panel provides an additional 9" of privacy on both the front and back sides of the durable laminate work surface. A built-in grommet hole keeps wires organized. The adder unit is available in the same great color combinations as the starter unit, making it easy to coordinate your environment. Smith Carrel's Conference Carrel is backed by a 10-year warranty.